/**

 @Name：layui.element 常用元素操作
 @Author：贤心
 @License：MIT
    
 */

layui.define('jquery', function (exports) {
    "use strict";

    var $ = layui.$
        , hint = layui.hint()
        , device = layui.device()

        , MOD_NAME = 'element', THIS = 'layui-this', SHOW = 'layui-show'

        , Element = function () {
            this.config = {};
        };

    //全局设置
    Element.prototype.set = function (options) {
        var that = this;
        $.extend(true, that.config, options);
        return that;
    };

    //表单事件监听
    Element.prototype.on = function (events, callback) {
        return layui.onevent.call(this, MOD_NAME, events, callback);
    };

    //外部Tab新增
    Element.prototype.tabAdd = function (filter, options) {
        var TITLE = '.layui-tab-title'
            , tabElem = $('.layui-tab[lay-filter=' + filter + ']')
            , titElem = tabElem.children(TITLE)
            , barElem = titElem.children('.layui-tab-bar')
            , contElem = tabElem.children('.layui-tab-content')
            , li = '<li lay-id="' + (options.id || '') + '"'
                + (options.attr ? ' lay-attr="' + options.attr + '"' : '') + '>' + (options.title || 'unnaming') + '</li>';

        barElem[0] ? barElem.before(li) : titElem.append(li);
        contElem.append('<div class="layui-tab-item">' + (options.content || '') + '</div>');
        call.hideTabMore(true);
        call.tabAuto();
        return this;
    };

    //外部Tab删除
    Element.prototype.tabDelete = function (filter, layid) {
        var TITLE = '.layui-tab-title'
            , tabElem = $('.layui-tab[lay-filter=' + filter + ']')
            , titElem = tabElem.children(TITLE)
            , liElem = titElem.find('>li[lay-id="' + layid + '"]');
        call.tabDelete(null, liElem);
        return this;
    };

    //外部Tab切换
    Element.prototype.tabChange = function (filter, layid) {
        var TITLE = '.layui-tab-title'
            , tabElem = $('.layui-tab[lay-filter=' + filter + ']')
            , titElem = tabElem.children(TITLE)
            , liElem = titElem.find('>li[lay-id="' + layid + '"]');
        call.tabClick.call(liElem[0], null, null, liElem);
        return this;
    };

    //自定义Tab选项卡
    Element.prototype.tab = function (options) {
        options = options || {};
        dom.on('click', options.headerElem, function (e) {
            var index = $(this).index();
            call.tabClick.call(this, e, index, null, options);
        });
    };


    //动态改变进度条
    Element.prototype.progress = function (filter, percent) {
        var ELEM = 'layui-progress'
            , elem = $('.' + ELEM + '[lay-filter=' + filter + ']')
            , elemBar = elem.find('.' + ELEM + '-bar')
            , text = elemBar.find('.' + ELEM + '-text');
        elemBar.css('width', percent);
        text.text(percent);
        return this;
    };

    var NAV_ELEM = '.layui-nav', NAV_ITEM = 'layui-nav-item', NAV_BAR = 'layui-nav-bar'
        , NAV_TREE = 'layui-nav-tree', NAV_CHILD = 'layui-nav-child', NAV_MORE = 'layui-nav-more'
        , NAV_ANIM = 'layui-anim layui-anim-upbit'

        //基础事件体
        , call = {
            //Tab点击
            tabClick: function (e, index, liElem, options) {
                options = options || {};
                var othis = liElem || $(this)
                    , index = index || othis.parent().children('li').index(othis)
                    , parents = options.headerElem ? othis.parent() : othis.parents('.layui-tab').eq(0)
                    , item = options.bodyElem ? $(options.bodyElem) : parents.children('.layui-tab-content').children('.layui-tab-item')
                    , elemA = othis.find('a')
                    , filter = parents.attr('lay-filter');

                if (!(elemA.attr('href') !== 'javascript:;' && elemA.attr('target') === '_blank')) {
                    othis.addClass(THIS).siblings().removeClass(THIS);
                    item.eq(index).addClass(SHOW).siblings().removeClass(SHOW);
                }

                layui.event.call(this, MOD_NAME, 'tab(' + filter + ')', {
                    elem: parents
                    , index: index
                });
            }

            //Tab删除
            , tabDelete: function (e, othis) {
                var li = othis || $(this).parent(), index = li.index()
                    , parents = li.parents('.layui-tab').eq(0)
                    , item = parents.children('.layui-tab-content').children('.layui-tab-item')
                    , filter = parents.attr('lay-filter');

                if (li.hasClass(THIS)) {
                    if (li.next()[0]) {
                        call.tabClick.call(li.next()[0], null, index + 1);
                    } else if (li.prev()[0]) {
                        call.tabClick.call(li.prev()[0], null, index - 1);
                    }
                }

                li.remove();
                item.eq(index).remove();
                setTimeout(function () {
                    call.tabAuto();
                }, 50);

                layui.event.call(this, MOD_NAME, 'tabDelete(' + filter + ')', {
                    elem: parents
                    , index: index
                });
            }

            //Tab自适应
            , tabAuto: function () {
                var SCROLL = 'layui-tab-scroll', MORE = 'layui-tab-more', BAR = 'layui-tab-bar'
                    , CLOSE = 'layui-tab-close', that = this;

                $('.layui-tab').each(function () {
                    var othis = $(this)
                        , title = othis.children('.layui-tab-title')
                        , item = othis.children('.layui-tab-content').children('.layui-tab-item')
                        , STOPE = 'lay-stope="tabmore"'
                        , span = $('<span class="layui-unselect layui-tab-bar" ' + STOPE + '><i ' + STOPE + ' class="layui-icon">&#xe61a;</i></span>');

                    if (that === window && device.ie != 8) {
                        call.hideTabMore(true)
                    }

                    //允许关闭
                    if (othis.attr('lay-allowClose')) {
                        title.find('li').each(function () {
                            var li = $(this);
                            if (!li.find('.' + CLOSE)[0]) {
                                var close = $('<i class="layui-icon layui-unselect ' + CLOSE + '">&#x1006;</i>');
                                close.on('click', call.tabDelete);
                                li.append(close);
                            }
                        });
                    }

                    if (typeof othis.attr('lay-unauto') === 'string') return;

                    //响应式
                    if (title.prop('scrollWidth') > title.outerWidth() + 1) {
                        if (title.find('.' + BAR)[0]) return;
                        title.append(span);
                        othis.attr('overflow', '');
                        span.on('click', function (e) {
                            title[this.title ? 'removeClass' : 'addClass'](MORE);
                            this.title = this.title ? '' : '收缩';
                        });
                    } else {
                        title.find('.' + BAR).remove();
                        othis.removeAttr('overflow');
                    }
                });
            }
            //隐藏更多Tab
            , hideTabMore: function (e) {
                var tsbTitle = $('.layui-tab-title');
                if (e === true || $(e.target).attr('lay-stope') !== 'tabmore') {
                    tsbTitle.removeClass('layui-tab-more');
                    tsbTitle.find('.layui-tab-bar').attr('title', '');
                }
            }

            //点击一级菜单
            /*
            ,clickThis: function(){
              var othis = $(this), parents = othis.parents(NAV_ELEM)
              ,filter = parents.attr('lay-filter')
              ,elemA = othis.find('a')
              ,unselect = typeof othis.attr('lay-unselect') === 'string';
        
              if(othis.find('.'+NAV_CHILD)[0]) return;
              
              if(!(elemA.attr('href') !== 'javascript:;' && elemA.attr('target') === '_blank') && !unselect){
                parents.find('.'+THIS).removeClass(THIS);
                othis.addClass(THIS);
              }
              
              layui.event.call(this, MOD_NAME, 'nav('+ filter +')', othis);
            }
            )
            */

            //点击菜单 - a标签触发
            , clickThis: function () {
                var othis = $(this)
                    , parents = othis.parents(NAV_ELEM)
                    , filter = parents.attr('lay-filter')
                    , parent = othis.parent()
                    , child = othis.siblings('.' + NAV_CHILD)
                    , unselect = typeof parent.attr('lay-unselect') === 'string';

                if (!(othis.attr('href') !== 'javascript:;' && othis.attr('target') === '_blank') && !unselect) {
                    if (!child[0]) {
                        parents.find('.' + THIS).removeClass(THIS);
                        parent.addClass(THIS);
                    }
                }

                //如果是垂直菜单
                if (parents.hasClass(NAV_TREE)) {
                    child.removeClass(NAV_ANIM);

                    //如果有子菜单，则展开
                    if (child[0]) {
                        parent[child.css('display') === 'none' ? 'addClass' : 'removeClass'](NAV_ITEM + 'ed');
                        if (parents.attr('lay-shrink') === 'all') {
                            parent.siblings().removeClass(NAV_ITEM + 'ed');
                        }
                    }
                }

                layui.event.call(this, MOD_NAME, 'nav(' + filter + ')', othis);
            }

            //点击子菜单选中
            /*
            ,clickChild: function(){
              var othis = $(this), parents = othis.parents(NAV_ELEM)
              ,filter = parents.attr('lay-filter');
              parents.find('.'+THIS).removeClass(THIS);
              othis.addClass(THIS);
              layui.event.call(this, MOD_NAME, 'nav('+ filter +')', othis);
            }
            */

            //折叠面板
            , collapse: function () {
                var othis = $(this), icon = othis.find('.layui-colla-icon')
                    , elemCont = othis.siblings('.layui-colla-content')
                    , parents = othis.parents('.layui-collapse').eq(0)
                    , filter = parents.attr('lay-filter')
                    , isNone = elemCont.css('display') === 'none';

                //是否手风琴
                if (typeof parents.attr('lay-accordion') === 'string') {
                    var show = parents.children('.layui-colla-item').children('.' + SHOW);
                    show.siblings('.layui-colla-title').children('.layui-colla-icon').html('&#xe602;');
                    show.removeClass(SHOW);
                }

                elemCont[isNone ? 'addClass' : 'removeClass'](SHOW);
                icon.html(isNone ? '&#xe61a;' : '&#xe602;');

                layui.event.call(this, MOD_NAME, 'collapse(' + filter + ')', {
                    title: othis
                    , content: elemCont
                    , show: isNone
                });
            }
        };

    //初始化元素操作
    Element.prototype.init = function (type, filter) {
        var that = this, elemFilter = function () {
            return filter ? ('[lay-filter="' + filter + '"]') : '';
        }(), items = {

            //Tab选项卡
            tab: function () {
                call.tabAuto.call({});
            }

            //导航菜单
            , nav: function () {
                var TIME = 200, timer = {}, timerMore = {}, timeEnd = {}, follow = function (bar, nav, index) {
                    var othis = $(this), child = othis.find('.' + NAV_CHILD);

                    if (nav.hasClass(NAV_TREE)) {
                        bar.css({
                            top: othis.position().top
                            , height: othis.children('a').outerHeight()
                            , opacity: 1
                        });
                    } else {
                        child.addClass(NAV_ANIM);
                        bar.css({
                            left: othis.position().left + parseFloat(othis.css('marginLeft'))
                            , top: othis.position().top + othis.height() - bar.height()
                        });

                        timer[index] = setTimeout(function () {
                            bar.css({
                                width: othis.width()
                                , opacity: 1
                            });
                        }, device.ie && device.ie < 10 ? 0 : TIME);

                        clearTimeout(timeEnd[index]);
                        if (child.css('display') === 'block') {
                            clearTimeout(timerMore[index]);
                        }
                        timerMore[index] = setTimeout(function () {
                            child.addClass(SHOW)
                            othis.find('.' + NAV_MORE).addClass(NAV_MORE + 'd');
                        }, 300);
                    }
                }

                $(NAV_ELEM + elemFilter).each(function (index) {
                    var othis = $(this)
                        , bar = $('<span class="' + NAV_BAR + '"></span>')
                        , itemElem = othis.find('.' + NAV_ITEM);

                    //Hover滑动效果
                    if (!othis.find('.' + NAV_BAR)[0]) {
                        othis.append(bar);
                        itemElem.on('mouseenter', function () {
                            follow.call(this, bar, othis, index);
                        }).on('mouseleave', function () {
                            if (!othis.hasClass(NAV_TREE)) {
                                clearTimeout(timerMore[index]);
                                timerMore[index] = setTimeout(function () {
                                    othis.find('.' + NAV_CHILD).removeClass(SHOW);
                                    othis.find('.' + NAV_MORE).removeClass(NAV_MORE + 'd');
                                }, 300);
                            }
                        });
                        othis.on('mouseleave', function () {
                            clearTimeout(timer[index])
                            timeEnd[index] = setTimeout(function () {
                                if (othis.hasClass(NAV_TREE)) {
                                    bar.css({
                                        height: 0
                                        , top: bar.position().top + bar.height() / 2
                                        , opacity: 0
                                    });
                                } else {
                                    bar.css({
                                        width: 0
                                        , left: bar.position().left + bar.width() / 2
                                        , opacity: 0
                                    });
                                }
                            }, TIME);
                        });
                    }

                    //展开子菜单
                    itemElem.find('a').each(function () {
                        var thisA = $(this)
                            , parent = thisA.parent()
                            , child = thisA.siblings('.' + NAV_CHILD);

                        //输出小箭头
                        if (child[0] && !thisA.children('.' + NAV_MORE)[0]) {
                            thisA.append('<span class="' + NAV_MORE + '"></span>');
                        }

                        thisA.off('click', call.clickThis).on('click', call.clickThis); //点击菜单
                    });
                });
            }

            //面包屑
            , breadcrumb: function () {
                var ELEM = '.layui-breadcrumb';

                $(ELEM + elemFilter).each(function () {
                    var othis = $(this)
                        , ATTE_SPR = 'lay-separator'
                        , separator = othis.attr(ATTE_SPR) || '/'
                        , aNode = othis.find('a');
                    if (aNode.next('span[' + ATTE_SPR + ']')[0]) return;
                    aNode.each(function (index) {
                        if (index === aNode.length - 1) return;
                        $(this).after('<span ' + ATTE_SPR + '>' + separator + '</span>');
                    });
                    othis.css('visibility', 'visible');
                });
            }

            //进度条
            , progress: function () {
                var ELEM = 'layui-progress';
                $('.' + ELEM + elemFilter).each(function () {
                    var othis = $(this)
                        , elemBar = othis.find('.layui-progress-bar')
                        , percent = elemBar.attr('lay-percent');

                    elemBar.css('width', function () {
                        return /^.+\/.+$/.test(percent)
                            ? (new Function('return ' + percent)() * 100) + '%'
                            : percent;
                    }());

                    if (othis.attr('lay-showPercent')) {
                        setTimeout(function () {
                            elemBar.html('<span class="' + ELEM + '-text">' + percent + '</span>');
                        }, 350);
                    }
                });
            }

            //折叠面板
            , collapse: function () {
                var ELEM = 'layui-collapse';

                $('.' + ELEM + elemFilter).each(function () {
                    var elemItem = $(this).find('.layui-colla-item')
                    elemItem.each(function () {
                        var othis = $(this)
                            , elemTitle = othis.find('.layui-colla-title')
                            , elemCont = othis.find('.layui-colla-content')
                            , isNone = elemCont.css('display') === 'none';

                        //初始状态
                        elemTitle.find('.layui-colla-icon').remove();
                        elemTitle.append('<i class="layui-icon layui-colla-icon">' + (isNone ? '&#xe602;' : '&#xe61a;') + '</i>');

                        //点击标题
                        elemTitle.off('click', call.collapse).on('click', call.collapse);
                    });

                });
            }
        };

        return items[type] ? items[type]() : layui.each(items, function (index, item) {
            item();
        });
    };

    Element.prototype.render = Element.prototype.init;

    var element = new Element(), dom = $(document);
    element.render();

    var TITLE = '.layui-tab-title li';
    dom.on('click', TITLE, call.tabClick); //Tab切换
    dom.on('click', call.hideTabMore); //隐藏展开的Tab
    $(window).on('resize', call.tabAuto); //自适应

    exports(MOD_NAME, element);
});

